Jordans Space Presentation

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Jordans Space Presentation

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(No Transcript)
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The Solar System

• That is a picture of the Solar System.The Solar
  System consists of 8 planets (Pluto is considered
  a dwarf planet and the sun is considered a star.)
  These planets are called Mercury, Venus, Earth,
  Mars, Jupiter, Saturn, Uranus and Neptune. All of
  these planets revolve (orbit) around the sun.

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The Sun
Diameter at Equator 1,392,000 km Temperature at
surface 5,800c Temperature at centre
15,000,000c FACT The sun is about 4.7 billion
years old and has a predicted lifetime of 10
billion years.
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Mercury No. Of satellites o
Distance from Sun 58 million km Diameter at
Equator 4880 km Mass compared to Earth
0.06 Time for one rotation of axis (length of
day) 59 days Typical temperature 420c to
-180c FACT The sunward surface of Mercury can
reach temperatures over 400c/752f
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Venus No. Of satellites o
Distance from Sun 108 million km Diameter at
Equator 12,100 km Mass compared to Earth
0.82 Time for one rotation of axis (length of
day) 243 days Typical temperature 460c FACT
Venus has an atmospheric pressure 90 times that
of the Earths.
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Earth no. Of satellites 1
Distance from Sun 150 million km
Time for one rotation of axis (length of one
day) 23 hrs 56 mins
Diameter at Equator 12,800 km
Typical temperature 20c
FACT 70 of the Earths surface is covered in
water.
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Mars no. Of satellites 2
Distance from Sun 228 million km Diameter at
Equator 6780 km Mass compared to Earth
0.11 Time for one rotation of axis (length of
day) 24 hrs 37 mins Typical temperature-53c FAC
T Mars is nicknamed The Red Planet because of
the thin layer of red dust on its surface.
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Jupiter no. of satellites16
Distance from Sun 778 million km Diameter at
Equator 143,000 km Mass compared to Earth
318 Time for one rotation of axis (length of
day) 9 hrs 51 mins Typical temperature -150c
FACT The red spot on the surface of Jupiter
is big enough to swallow the planet Earth three
times.
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Saturn no. Of satellites 20
Distance from Sun 1430 million
km Diameter at Equator 120,000 km Mass compared
to Earth 95 Time for one rotation of axis
(length of day) 10 hrs 14 mins Typical
temperature -180c FACT The rings of Saturn
consist of millions of small chunks of rock and
ice caught in the planets gravitational field.
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Uranus no. Of satellites 15
Distance from Sun 2870 million km Diameter at
Equator 52,400 km Mass compared to Earth
15 Time for one rotation of axis (length of day)
17 hrs 18 mins Typical temperature -210c FACT
It was only in 1977 that Uranus was found to have
thin rings around its equator.
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Neptune no. Of satellites 8
Distance from Sun 4400 million km Diameter at
Equator 48,600 km Mass compared to Earth
17 Time for one rotation of axis (length of day)
16 hrs 7 mins Typical temperature -220c FACT
Neptune is a giant gas planet of hydrogen, helium
and methane.
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Pluto no. Of satellites 1
Distance from Sun 5800 million km Diameter at
Equator 2300 km Mass compared to Earth
0.002 Time for one rotation of axis (length of
day) 6 days 9 hrs 17 mins FACT Pluto has an
elliptical orbit which occasionally takes it into
the orbit of Neptune.
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SPACE HISTORY

• For hundreds of years, most people thought that
  the Sun, the planets and the stars revolved
  around the Earth. Throughout the centuries,
  however, there were men who believed that this
  was not true.

• Aristarchus
• Aristarchus was a scholar of Ancient Greece who
  lived about 2,300 years ago. He was one of the
  first men who recognised that the Earth was not
  flat, but a globe. He claimed that the Earth
  moved around the Sun, but hardly anyone believed
  him. By the time he died his theory had almost
  been forgotten.

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More famous people

• Galileo
• About 40 years after Copernicus, Italian
  scientist Galileo Galilei continued to search for
  answers. With a powerful telescope, he discovered
  four of Jupiter's moons. He also proved that
  Venus moved around the Sun and-as Copernicus had
  believed-that all the planets moved around the
  Sun. When he wrote a book about his discoveries,
  he was accused of casting doubt on the Bible. He
  had to withdraw his findings as the Bible says
  the Sun moves around the Earth.

• Copernicus
• About 500 years ago, polish astronomer Nicolaus
  Copernicus was observing the stars and realised
  that Aristarchus had been right! He wrote a book
  about the orbit of the Earth around the Sun. In
  1543, soon after it was published, Copernicus
  died, but he is still remembered as the founder
  of modern astronomy.

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Newton

• One year after Galileos death, Isaac Newton was
  born in England. He discovered the force of
  gravity when he realised that an object thrown
  into the air fell back to the ground. This also
  explained why the moon moved around the Earth
  instead of floating off into the Universe. The
  Earth kept the moon in orbit with its own force
  of gravity. The Sun, being the greatest force of
  gravity, kept all the planets in a regular orbit.
  Aristarchus, Galileo and Copernicus were right
  everything in our solar system orbits the Sun.